ASTM B215-08
(Practice)Standard Practices for Sampling Metal Powders
Standard Practices for Sampling Metal Powders
SIGNIFICANCE AND USE
Since many tests are performed using very small amounts of powder, it is most important that the test portions be obtained in a standardized manner. The practices described here take into account the possibility of segregation of the metal powder during and after filling of containers. PRACTICE A Top FOR POWDERS BEING TRANSFERRED FROM BLENDERS OR STORAGE TANKS Top
SCOPE
1.1 These practices describe two procedures for obtaining samples of metal powders for subsequent testing:
1.1.1 Practice A—For powders being transferred from blenders or storage tanks.
1.1.2 Practice B—For powders already packaged in containers.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation:B215–08
Standard Practices for
1
Sampling Metal Powders
This standard is issued under the fixed designation B215; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 These practices describe two procedures for obtaining
samples of metal powders for subsequent testing:
1.1.1 Practice A—For powders being transferred from
blenders or storage tanks.
1.1.2 Practice B—For powders already packaged in con-
tainers.
1.2 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
2. Referenced Documents
2
2.1 ASTM Standards:
B243 Terminology of Powder Metallurgy
3. Terminology
3.1 Definitions —Definitions of powder metallurgy terms
can be found in Terminology B243. Additional descriptive
FIG. 1 Scheme of Sampling
information is available in the Related Materials section of Vol
02.05 of the Annual Book of ASTM Standards.
3.2 Description of Terms (see Fig. 1):
3.2.5 test portion (test specimen)—defined quantity of pow-
3.2.1 increment—quantity of powder obtained by a sam-
der taken from the test sample on which the test is performed
pling device at one time from a single lot.
or from which test pieces are produced.
3.2.2 gross sample—quantity of powder adequate for the
4. Significance and Use
tests to be performed, consisting of all the increments taken
from a single lot.
4.1 Since many tests are performed using very small
3.2.3 composite sample—blended entire gross sample.
amounts of powder, it is most important that the test portions
3.2.4 test sample—quantity of powder taken from the com-
be obtained in a standardized manner. The practices described
posite sample for determining a single property or for prepar-
here take into account the possibility of segregation of the
ing the test pieces. It should normally be taken by splitting the
metal powder during and after filling of containers.
composite sample.
PRACTICE A
FOR POWDERS BEING TRANSFERRED FROM
1
These practices are under the jurisdiction of ASTM Committee B09 on Metal
BLENDERS OR STORAGE TANKS
Powders and Metal Powder Products and are the direct responsibility of Subcom-
mittee B09.02 on Base Metal Powders.
5. Apparatus
Current edition approved Nov. 1, 2008. Published December 2008. Originally
5.1 Rectangular Receptacle, capable of being moved com-
approved in 1946. Last previous edition approved in 2004 as B215 – 04. DOI:
10.1520/B0215-08.
pletely across the stream of flowing powder at a constant speed
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
and having a length and width greater than the stream of
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
powder. It must be large enough so that no overflow of powder
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. occurs when collecting the sample.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
B215–08
5.2 Small Blender. PRACTICE B
5.3 Sample Splitter, see Fig. 2.
FOR POWDERS ALREADY PACKAGED IN
5.4 Spinning Riffler, see Fig. 3.
CONTAINERS
6. Procedure
8. Apparatus
6.1 Pass the rectangular receptacle at a constant speed
8.1 Keystone Sampler, see Fig. 4.
completely through the stream of flowing powder. If the entire
8.2 Small Blender.
contents of one lot of powder are being packed in a single
8.3 Sample Splitter, see Fig. 2.
1 1 3
container, take increments when the container is ⁄4 , ⁄2 , and ⁄4
8.4 Spinning Riffler, see Fig. 3.
filled.Ifseveralcontainersaretobefilledbyonelotofpowder,
1
take the first increment when the first container is ⁄2 filled, the
9. Procedure
second increment in the middle of the run, and the third
9.1 Insert the Keystone sampler in the closed position into
increment near the end of the run. Additional increments may
the powder at a point 70 % of the distance from the center of
be agreed upon by the parties concerned. The total amount
the cross section to the periphery and straight down to the
from all increments shall be adequate for the tests to be
bottom of the container. Then twist the sampler to the open
performed.Combinetheincrementstoobtainthegrosssample.
position allow
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:B215–04 Designation:B215–08
Standard Practices for
1
Sampling Metal Powders
This standard is issued under the fixed designation B 215; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope*
1.1 These practices describe two procedures for obtaining samples of metal powders for subsequent testing:
1.1.1 Practice A—For powders being transferred from blenders or storage tanks.
1.1.2 Practice B—For powders already packaged in containers.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
2
B 243 Terminology of Powder Metallurgy
3. Terminology
3.1 Definitions —Definitions of powder metallurgy terms can be found in Terminology B 243. Additional descriptive
information is available in the Related Materials section of Vol 02.05 of the Annual Book of ASTM Standards.
3.2 Description of Terms (see Fig. 1):
3.2.1 composite sample—blended entire gross sample. increment—quantity of powder obtained by a sampling device at one
time from a single lot.
3.2.2 gross sample—quantity of powder adequate for the tests to be performed, consisting of all the increments taken from a
single lot.
3.2.3 increment—quantity of powder obtained by a sampling device at one time from a single lot. composite sample—blended
entire gross sample.
3.2.4 lot—definite quantity of powder processed or produced under uniform conditions.
3.2.5test portion (test specimen)—defined quantity of powder drawn from the test sample on which the test is performed or from
which test pieces are produced.
3.2.6test sample—quantity of powder taken from the composite sample for determining a single property or for preparing the
test pieces. It should normally be taken by splitting the composite sample.
3.2.5 test portion (test specimen)—definedquantityofpowdertakenfromthetestsampleonwhichthetestisperformedorfrom
which test pieces are produced.
4. Significance and Use
4.1 Since many tests are performed using very small amounts of powder, it is most important that the test portions be obtained
in a standardized manner. The practices described here take into account the possibility of segregation of the metal powder during
and after filling of containers.
1
These practices are under the jurisdiction of ASTM Committee B09 on Metal Powders and Metal Powder Products and are the direct responsibility of Subcommittee
B09.02 on Base Metal Powders.
Current edition approved Oct.Nov. 1, 2004.2008. Published October 2004.December 2008. Originally approved in 1946. Last previous edition approved in 19962004 as
B215–96.B 215 – 04.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
B215–08
FIG. 1 Scheme of Sampling
PRACTICE A
FOR POWDERS BEING TRANSFERRED FROM BLENDERS OR STORAGE TANKS
5. Apparatus
5.1 Rectangular Receptacle, capable of being moved completely across the stream of flowing powder at a constant speed and
having a length and width greater than the stream of powder. It must be large enough so that no overflow of powder occurs when
collecting the sample.
5.2 Small Blender.
5.3 Sample Splitter, see Fig. 2.
5.4 Spinning Riffler, see Fig. 3.
5.5Micro-sample Splitter.
5.6Micro-sample Spinning Riffler .
6. Procedure
6.1 Pass the rectangular receptacle at a constant speed completely through the stream of flowing powder. If the entire contents
1 1 3
of one lot of powder are being packed in a single container, take increments when the container is ⁄4 , ⁄2 , and ⁄4 filled. If several
1
containers are to be filled by one lot of powder, take the first increment when the first container is ⁄2 filled, the second increment
...
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